A late afternoon little quiz

 

Tell me who :

1 - 小野 洋子 , a conceptual artist, of some fame
2 - Ri Sol-ju exalting her husband's accomplishments, North Korean leader Kim Jong-un
3 - Pretty Mari Hoshizawa, a Japanese porn actress (fom one of her best performance)
4 - Mrs. Lai Ziang celebrating the birth of  her twelfth baby (Guinness World Records)